Improvement in machines for sawing staves



A. KNIPPER.

MACHINES FOR SAWING S'IAVES.

No. 191,158. Patented May 22,1877.

"AND EW KNIPPER, on CLEVELAND, onro.

IMPROVEMENT IN MACHINES FOR SAWING STAVES.

Specification forming part of Letters Patent No. 191,158, dated May 22, 1877; application filed April 21, 1876.

To all whom. it may concern Be it known that I, ANDREW KNIPPER, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain Improvements in Machines for Sawing Staves, of which the following is a specification These improvements relate to cylindrical stave-sawing machines, being improvements on Patent granted to Peter Gerlach, John Gerlach, and Andrew Knipper, No. 130,802, August 27, 1872; and consists in the peculiar construction and arrangement of the gaging device, whereby the same may be operated by a foot-lever for adjusting it to set the Wooden block for cuttting, more or less, as may be required, when starting on a new block.

In the drawing, Figure 1 is a top or plan view. Fig. 2 is an enlarged perspective view of the carriage, embracing the aforesaid dogging device and the gaging devices.

a is the saw-frame, which I make entirely of iron, for firmness and solidity. b is a cy lindrical saw attached to anarbor, 0, working in journals 10 p in the frame, and carrying aband-wheel, d. To the frame a a trough, 25, extending within the cylinder, is attached, to catch the staves as they are sawed from the block. From the frame, upon one side of the saw, arms a are extended, to which the carriage-bed e is secured. Upon the carriagebed parallel railsf f are arranged, upon which the carriage 9 travels.

The carriage is provided with two series of wheels or rollers, to travel upon the rails f f, one of which is arranged parallel to and the other vertically with the plane of the carriage.

The carriage is propelled by means of a handle, I. A bent arm, m, extends from the rear end of the carriage, to which it is rigidly attached, and connects with a rake, n, which advances and recedesin the trough twith the carriage and withdraws the stave.

Thus far the description is like the machine patented August 27, 1872.

Here my improvements begin- Dogging devices h h are attached to the carriage, to securely hold the block from which the stave is sawed. h is a fixed angular serrated plate at the forward end of the car riage. h is a sliding plate, which moves in a slide-frame attached to the carriage. [t has a serrated edge, and is provided with an upwardly-curved plate, also having a serrated edge: The plate h is actuated by a lever, is, pivoted to the side of the slide-frame, and has its lower end made in the form of a toothed arc, is, which meshes with a piniongear, m, on a shaft, 6, said shaft being journaled in the sides of the carriage g, and having on it, underneath the sliding plate h, a pinion, which works in a rack secured to the under side of said plate h. The wooden block, being placed between the plates h and It, is clamped therein by depressing the lever 70.

The outer end of the shaft i is provided with a knob, 2', the object of which is, that, if it should be necessary to adjust the plate It to reach blocks of varying lengths, the lever 70 being thrown out of gear with the pinion w, the shaft may be turned so as to bring the plate to the block, and then thelever put into gear again at a different point on the pinion.

Arms 0" 1', extending up from the trough it, support the gage 0, which is provided with arms 3 y, sliding in grooves in the upper parts of said arms. A rock-shaft, s, is placed between the arms 7 1", having arm 8 connected by short links 8 to the arms y y. A hand-lever, q, is attached to the rock-shaft, by which the gage may be operated. It is provided with a spring-lever catch, g which, in connection with notches on the arm 1', serves to hold the lever at any desired position. z is a foot-lever pivoted to the under side of the trough t, and connected to the rock-shaft s by a link and arm, z by which the gage may be operated by the foot, a spring z drawing the foot-lever upward when released from pressure.

The advantages of this adjustable gage are, that in commencing to cut a block the gage may be made to move toward the carriage, so as to cut off a thin piece, to give the inside curve to the first stave. Or should the block be rough, broken, or imperfect on the side, the gage may be moved farther away from the carriage and cutoff a thick piece, to

IQLUSS prepar a the block without i the necessity of, arms and lin k z and spring 2, all combined, 7

' cutting several timesto reach a perfect par-i :gtionof theblofcki 7' V r i V i V i' Having described my inventi0n ,'I'e1a.im-'-V iarrangemiand opgragti ng snbstalitially as'and r for thGiPllIPOSB specifia The gage '0, provided with'arms 3 y ,rthe Witn sse s r V V rock-shaftghavingarmss,the hand1eq,'pr0- 5' GEQLW.'IIHBICITS, Q i

' vided with: tabs Gatch-1everq,;the foot-lever z, E. A GA L i i 7 i 

